Tilting arbor



FIG. 1 is a perspective view embodying the ornamental design constituting my invention;

FIG. 2 is a front elevational view;

FIG. 3 is a left side view;

FIG. 4 is a right side view shown with the bin in an open condition;

FIG. 5 is a top elevational view;

FIG. 6 is a rear elevational view; and,

FIG. 7 is a bottom elevational view. 

The ornamental design for a tilting arbor, as shown and described. 